The only deposit a landlord may lawfully collect is last month's rent, which must be applied to the final month and accrues interest. A damage deposit is not lawful in Ontario, whatever the listing calls it.
A landlord can recover a unit for their own or a close family member's use, but that route carries compensation and a good-faith requirement, and bad-faith use of it is penalised.
The Landlord and Tenant Board queue is long enough to be an underwriting assumption rather than a footnote. Price the time, not just the rent.